Well-casing coupling



y Sept. 9 1924.

H, B. AwlNfr-Ens. ET .AL

war.;I -bxszue copP-LING Fuga Dee. 17. 1920 wuvwtoz Win ters e UTE. f1"Corn-1 ick Patented Sept. 9, 1924. i.

`UNITED STATES vvPxrjiiir OFFICE;

HENRY B. WINTER/S AND JOHN E. MCCORMICK, OF ELKI-IART, KANSAS; SAIDWINTERS ASSIGNO'R TO SAID MCCORMICK.

WELL-CASING COUPLING.

Application filed December 17, 1920. Serial No. 431,400.

To all whom t may concern:

Be it known that we, HENRY B. "WINTERS and JOHN E. McCormick, citizensof the United States, residing at Elkhart, in the county of Morton andState of Kansas, have invented certain new and useful Improvements infell-Casing Couplings, of which the following is a specification.

This invention relates to an improved well casing coupling and has asone of its principal objects to provide a coupling wherein the sectionsof a well casing may be quickly and securely connected.

A further object of the invention is to provide a coupling employing aplurality of coupling straps which may be easily applied for securingthe casing sections together.

And the invention has as a still further object to provide a. couplingemploying retaining means for the free ends of the straps so that thestraps will not pull out under pulling stress upon the casing.`

Other and incidental objects will appear iereinafter.

In the drawings:

Figure 1 is a fragmentary perspective view showing a coupling embodyingthe present invention, A

Figure 2 is a transverse sectional view looking downwardly upon thecoupling, and

Figure 3 is a fragmentary vertical sectional view on the line 3 3 ofFigure 2.

In carrying the invention into eifect, we employ casing sections 10 and11 respectively which are formed at their meeting ends to telescope onewithin the other, the section 11 being limited in its movement over thesection 10 by an annular stop shoulder 12. Snugly surrounding thesection 10 above said shoulder is a collar 13 riveted or otherwisesecured at spaced points to the section and formed from said collar isaplurality of outwardly or radially directed stirrups 14. Preferably, thecollar isv provided with three of said stirrups and, as will be observedupon reference to Figure 2 of the drawings, the rivets securing saidcollar are arranged substantially midway between the stirrups. Formedthrough the lower end portions of said stirrups near the lower edge ofthe collar are slots 15 below which are vdefined keepers 16. Snuglysurrounding the casing section 11 near its adjacent end is acollar 17.This collar is i i a counterpart of the collar 13, being similarlysecured and provided with a plurality of stirrups 18. These stirrupscorrespond to the stirrups 14 Vand are provided near their upper endsadjacent the upper edge of the collar with slots 19 above which4 aredefined keepers 20. As shown in Figure 1, the casing sections are fittedtogether in such manner 'that the stirrups 14 and 18 are alined andfitting through said stirrups are coupling straps 21. These straps areeach preferably formed from a length of suitable resilient sheet metaland, as willl be noted, the upper end portions of the straps are loopedover the stirrups 14 and inserted through the slots 15 to engage beneaththe keepers 16 while the lower end portions of the'straps are loopedover the stirrups 18 and inserted through the slots 19 to engage beneaththe keepers 20. r1`he straps will thus rigidly connect the casingsections while the keepers will retain or tie the free end portions ofsaid straps so that the straps will not pull out under pulling stressupon the casing.v Je accordingly provide a coupling of highlyefectiveconstruction and a coupling which may be'readily employed in .connectionwith well casings now commonly in use.

Having thus p described the invention,` what isl claimed as new is:

The combination with casing sections tele'-` scopically connected, oneof' said sections having an annular shoulder abutting against'theadjacent edge ofthe other of said sections; ofV collars secured on thesections a-t the adjacent ends thereof, radial stirrups. integral withsaid collars extending between the edges thereof,keepers on the`stirrups formed on a longer radius than the` stirrups, and couplingstraps passing under the stirrups and having theirV free end portionsbent back over the remote edges of the stirrups and engaged through thekeepers. y

In testimony whereof we affix our signatures.

[n s.] Y [n s]

